Soil-water catch basin and heat reclaimer



F. s. BOLTZ 15789 377 SOIL WATER CATCH BASIN AND HEAT RECLAIIER I Jan.20, 1931.

Filed Odt. 20,

INVEN+DV1 Jan. 20, 1931. F. s. BCLTZ s olh WATER CATCH BASIN AND HEATRBQLAIIER Filed Oct. 20. 1927 2 Sheets-Sheot 2 Patented Jan. 20, 1931D-,STATES.'

r331) s, BoL'rz, or iyrAn'shrELn, mAssAcHnsErTs sort-WATER oa'rcn BasinAnn-HEAT R CLAIMEB.

Application filed October .20, 1927. Serial No.'227,5 07.

, The invention relates to an apparatus for vention' is to provide meansby whichflthe i utilizing the heat of a fluid which has already beenheated and used and which usually is allowed'to run towaste, such aswater which has performed its function in a laun- 7 dry, dye house, woolscouring plant or else;- where. The present invention is substantiah 1ya division of an application filed by me February 17 1926, Serial No.88,908.-- Ap- 10 paratus embodying the invention comprises i a catchbasin for the hot soil 'waterand a heat transfer element which inpreferred form consists of a shell having tube sheets at Y its oppositeends and tubes extending through the shell connected with said sheets,

5 passed through the waste-water heat extractor smallparticles ofsolidand vegetable matter will collect and accumulateinside of the'shell andalso around the tubes and form a deposit thereon which in a measureinsulates. the waste water tubes and lessens the degree of heat transferfrom the hotsoil water-to the. fresh cold water inxthe shell. One objectof the present invention is to provide means by'which 'the pressure'offresh water flowing into and out of the shell may be utilized to blow.out the'sediment collecting in theshelL; 1

' The used warm waterfrom which. the heat is to be reclaimed usuallycontains a quantity 40 of lint, small pieces of cloth, paper, grease andother solid matter. As'the'circulation of the warm waste water isfdownward through the tubes of the heat extractor these solid particlesfaredeposited. in the bottom of the soilwater basin inwhich' the heatextractor is suspended or" supported and in time they buildup to quitean amount with-. i in the basin and prevent 'or at least retard thecirculation of the warm waste water through the tubes. One object. of.-the present...in-

preferab-ly being connected-With thev city water supply so thatsuificientpressur'e, will pressure-of freshwater flowing into and out ofthe shell may be utilized to blowout the sediment collecting in thebottom oflthe catch basin. V V I The invention will be fully 'understoodfrom the followingdescription when taken in connection with theaccompanying draw-V ings and the novel features thereof will bepointedout and 'clearly'defined in the claims r at the close ofthisspecification.

y In the drawings: V i y Fig. 1 is a" plan View of one .form ofapparatus embodying the invention with the cover of the-catch basinremoved. FigureQis a vertical section through the catch basin takenon'thefline 2-2 of Fig- 1. Fig. 3 is a section on line 3 3 of Fig. 2; IFig. 4 is a section on line 4,4;of Fig. 'Referring to the drawings,thereis shown at A a heating apparatus-consisting of a hollowcylindrical shell l0q-havingtube sheets 11, 12 at its upper andlower'endsrespectively and tubes 13 extendingthrough the shell andconnected with the tubesheets, the said tubes being open at each end tothe interior of the catch basin B in which it is set. I The hot soilwater from the catch basin will enter the tubes 13at their upper ends.it being assumed that the hot soil water in a the basin will be ofsufficient depth so that the upper surface of the soil water will jbeabove the'tops of the tubes. a An'inlet pipe lzfor the'fresh water whichis to becheated enters the shelllQthroughan inlet aperturejin the wallof theshellnear the lower end thereof just above the'lower tube sheetandadischargesinto said shelL; The clean waterthus introduced willcirculate. around the tubes, and pass upward to the fresh-wat'erjoutletl5gthrough theside wall of theshell just below the upper tube sheet 11.;The freshwater will be heated by 'contact'with the hot tubesas'ithewater passes, up through the ,shell; and circulates aroundtheQt-ubes- The fresh water inlet 14 is connected with I asultable'source having. a headfpressure,

The hot soil water enters the basin through pipe 36.

The hot soil water will -be cooledfby coming in contact with the coldfresh water-pipes and will settle to the bottom of the basin,"

A soil water overflow pipe 23 is, provided through which the cooled soilwater settling to the bottom will be carried from the lower part of thecatch basin upward to the upper part of the catch basin 'at'a pointhigher 7 than the top of the shell and thence be dis-.

charged to'the sewer or other suitable place of'discharge. This overflowpipe 28 is open at its lower'end to the soil waterin the lower part ofthe catch basin. Said pipe 23 extends upward within the catchbas'inoutside of the shell 10 to "apoint somewhat above the normal level ofthe hot soil water in-the catch basin. The normal level of the soilwater is shown at a and the upper end of the overflow pipe is shown at24; Projecting from one side of the overflow pipe near the upper endthereof is a chamber 25 which forms an enlargement of the upper portionof said pipe 23, said chamber having a closed bottom. A verticalpartition or baflie 26 separates said chamber from the body of the pipe23, said partition extending up to about the normal level ofthe wastewater, b'ut not r to the full-height of the said pipe 28. The

partition 26 may be the upper portion of.

one side wall of the overflow pipe. 1

' bafiie plate forms a danror weir over which This the waste water as itrises in'the overflow pipecan flow into said chamber 25. Said chamberhas an upward bend or extension 35. An outlet pipe 27leads'fron'1 saidchaniber extension 35 to carry the cooled soil water to the sewer orother discharge point.

- The shell 10 may be supported in any suitable way within the catchbasin so that the bottom of the shell will be some distance above thebottom of the catch basin and the top ofthe shell will besome distancebelow the normal water 'level of the waste water.

- As shown in the drawings the wall'of the The'blow off apparatus forcleaningthe soil water inlet tubes 13 within the shell and for cleaningthe bottom of the shell and also for blowing out-the sediment and otherac cumulationsfrom the bottom of the catch basi is as follows:

A blow ofi pipe 17 whose lower end is open to the interior of the shellnear the bottom tube sheet 12 extends up through the upper tube sheet tosome distance above the normal level of the waste water in the basin aswell as above the top of the heat reclaimer shell and is connected witha pipe 18 which exbasin as shown in Fig. 1 and is connected with a pipe19 which extends down outside of the shell but within the basin to apoint below the lower end of the shell. It is there tractor shell by thewater entering through the fresh water inlet pipe 14; will tend to lodgein the bottom'of the heat extractor shell, that is on the bottom tubesheet, and the accumulation will be mainly on the opposite side of theshell from the inlet opening. For this reason the upright portion of thepipe 17 is located on the opposite side of the heat extractor shell fromthe cold water inlet pipe 14. o I

A'blow off valve 2 is connected with the horizontal run of the pipe 18in the upper part of the basin. This blow off valve is usually keptclosed except when it is desired to blow off the sediment and depositwhich collects in the basin and shell and in the tubes. By opening theblow off Valve 22 the pressure of the incoming cold water through theinlet pipe 14 due to the pressure in'th'e city system will set up arapid'current from the mouth of the inlet pipe 'le'through the shell 10to the open lowerend of pipe 17, thence up through i the .pipe 1 7,thence through 'theextension pipes 18 19 and 20, and through theapertures 21, thencetowardth'e. open lower end of the overflow pipe.Thecurrent of water passingthrough the shell will stir (up the waterthroughout the shell and drive the sediment toward the open lower end ofpipe 17'andalso clean ofi the deposit on the outer walls of the tubes 13and carry thesediment with the water up through the tube 17, thencethrough the crossover portion 18 and thence down through the pipe 19 tothe pipe 20 in the lower partof the basin and out'through the apertures21 in the pipe 20. into the catch basin. This will set up 'acurrenttoward the open lower end ofjtheoverflow pipe, :The current whichis'set up the pressure up through pipe 17,}thencethrough pipe'18, downthrough the'fpipe 19 and outthrough the apertures 21 will entrain thelint and other'solid particles which have'collec'ted in' the lower partof thecatch basin and sweep themovertoward the open lower end of the 'offlushing the dirt out of the heat extractor and of flushing the lintandother solid matter which collects under the heat extractor out i ofthe catch'ba-sin.

- Instead of utilizing water pressure through the blow-off'pipeto'force'the waste water toward the overflow )i 3e an 7 other fluid 7 Ipressure, liquid or gas, may be introduced into the catch basin to thesame effect and;

come within the scopeof my invention.

that I claim is: V

1. An apparatus of the character described comprising a vertical tubularshell havin tube sheets at its endsand a luralit Z3 of tubes connectingsaid sheets, the tubes being open attheir ends to soil water, a soilwater catch basin III which said shell is -mounted insuch manner thatthe tubesare open at each end to the soil water within the basin andmeans for introducing freshwater under pressure into the said shell intocontact with the soil water tubes and thence out of said shell, anoverflow pipe in said catch basin which extends down into the lower partof said basin and is open at its lower end,

the upper part of said overflow pipehaving communication with adischarge outlet to a pointoutside of the basin, a blow-0E pipe whichextends into the interior of said shell and'is-open to the interior ofthe shell, the

other end of said blow-off pipe extending outside of said shell andbeing open to the soil water in the lower part of said catch basin, avalve in. said blow-oft" pipe whereby when the valve is open thepressure of the inflowing fresh water on the waterin the interior of theshell is adapted to force the water and sedimentv in the, interior ofthe f shell through the blow-oif pipe down into the lower part of thecatch basin and to force the water in the 'lowerpart of thecateh basinandthe entrained contentsup through-- the said overflowpipe and outthrough said discharge outlet. 1 v

2. An apparatus of the'character described H comprising a soil watercatch basin, a shell mounted in said catchbasin, said shell having tubesheets at its ends and a plurality of tubes connecting said-sheets,sa'id tubes being open at their ends to the soil water in thecatch basin, ,ineans forintroducing clean 760 water underpressure intosaid shell and into contact with the outer walls of said tubes withinthe shell, a flushpipe extending from the lower part of said shell to apoint outside" of said shell, and beingopen at one end'to the interiorof said shellnear the lower end of the shell, at a'point substantiallyopposite the inlet opening for the clean water pipe,

the otherendbfsaid'fiush pipe having adischarge outlet outside of saidshell,ithe pressure'of the clean water entering said shell beingiadaptedto flush the: interior of'the shell and the outer walls ofasaid tubesand force the water with" the entrained contents up through said-flushpipe 'to' the discharge outlet therefrom, a

3;: Anapparatus of the character described comprisinga soil water catch"basin, a shell mounted in said catch basin, said shell haying tubesheets at its ends and a plurality of tubes connecting saidsh'eets, thetubes being i open at their ends to the soil water in the catch basin,ine'a'nsvfor introducing clean water into said shell and intocontactwith said tubes, an overflow pipe leading from the lower partof saidcatch basinto the-up per'pa-rt thereof, a discharge passagefroin saidoverfiowpipe to a-point outside of the 'catclibasin and means forcausing a current of fresh water to be distributed under pres- -sure;inthe lower part of said catch basin catch basin into 4:. An apparatus ofthe character described comprising a soil water catch basin,iai-shelland through said overflow mounted in said catchbasin: hayingtubesheet-sat its ends-and a pluralityof tubes connecting-said sheets, thetubes being open at their ends to the soil Water in the catch basin, anoverflow pipe leading from the lower part of thecatch basin intotheupper partthereof, a discharge passagelfrom said overflow pipe to 'apoint outside of the catch basin, a' pipe for introducingclean waterunderpressure into the lower-part ofsaid shell andint'o contactwith saidtubes, ablow-oil' ,pip'e'extendin'g from:theinterior ofthe shell throughthe wall thereof into the lower part of-th'e catch ba-sin, one end ofsaid: blow-oh pipe being opento the clean" water in the v and adapted toforce the soil water and: entrained contents in the lower part of theshell and"thefother end'of the blow-oil? pipe 7 having ap ortion;adjaeent the wall ofthe catch basin formed with apertures-through whichtheclanWater is discharged intolthe catch basin, the pressure 10f thecleanwater coming into the shell'and thence through-the blowofipipelbeing adapted to force the soil water and entrained contentsinthelower part: vof the catclrbasin toward said over};

5. A n app'aratu'so' f thecharacterdescribed 7 comprising a soil watercatch basin, aclean I water shell mounted in saidcatch-basinconegstrueted' andarranged tofp'ref'vent thev ming ing of the soilwaterwiththefresh waterin I the shell, a pipe for introducing eleanwaterunder pressure 'into said shell, a pip'e'leading' fromthe lower part-ofsaid catch basin toftl'ie upper part thereof; and haying af dischargeto,

apoint outside of said catch ba im a blowofi pipe open at one endto the.cleanwater introducedinto the shell under pressure, and opening at itsother end into the catch basin, the pressure of the clean Water fiowingthrough the .blow-ofi pipe into the waste water basin being adapted toforce the Waste Water and entrained-contents towardthe entrance "to saidwaste water, discharge pipe.

6. An apparatus of the character described comprising .a cat-ch basinforhot soi-lwater, a clean water chamber enclosed in said catch basin soconstructed and arranged'as to preventthe lningling'of the soil waterwith the clean water,a discharge conduit leading from the lower part ofsaid catch basin toward the upper part thereof and having a dischargeoutlet to a point outside of said catch'basin,

a blow-oft pipe communicating with the interior of said clean watershell and discharging into said basiiu'a source of ,fiuid'pressurecommunicating with 'saidiblow-off pipe, and means for causing fluidunder pressure to pass through-the blow-off pipe into said waste glingof the soil water in thebasin with the fresh water in the shell, meansfor introducing clean water into said shell,qa condu t leadingi frointhe lower part of said catch basin to the upper-part thereof and havinga discharge outlet at a point outside of said catch basin, a blow-oilpipe which extends to pass through the blow-off pipe into the ,WasteWater basin whereby said pressure is adapted to force thesediinentin theclean water shelland the waste water andentrained contents-in the catchbasin into said'waste water discharge conduit.

9. lApparatus 10f l e-character comprising"accatchbasin for hot wastewater, a heat nterchange]: for clean uwater located withinthe basin soconstructed and arranged as to pretent the iningllng of the waste waterwith the clean water, a discharge pipel eadin g frolnthelower part ofthe waste water basin upwards and through thewall thereof to a pointoutside the basin and means for introducing fluid under pressure intothe lower part of said basiniadapted to force the water and sedimentfrom-the lower part of sald basin into and through said discharge pipeto apoint outside ofthe basin. In testimony whereof I aflix' mysignature. P

. FRED Is. .Bo Z.

fromthelinterior of the fresh water shell through the wall of said shellinto'the lower part of the waste water ;basin,' said blow-off pipehaving an inlet theretofrom the clean water shell and an outlet into thelower-part otthe waste water basin and means joicausing fluid underpressure topass into said blow-oil pipe andthence; into -the waste waterbasin whereby said pressure is adapted to forcejthe waste water, andentrained-contents into said waste "water discharge conduit;

water shellinounted'in said catch basin con structed and arranged toprevent the mingling of the soil .water in the basis with the 7' freshwater in the shell, means for-introduc- 8.- Anapparatus of the characterdescribed comprising a soil ,water'catch'bas1n',a clean ing clean waterinto said shell, a conduit leading vfrom the lower partof'said catchbasin to the upper part thereof and having discharge passage to yapoint. outside of 7 said "catch basin,: a: blow-0ft pipe extending fromtheiinterior of the freshwater shell into 7 the Lupper part of the'catchbasin, thence down into thelower part of said catch'basin andgrneans forcausing fluid under pressure

